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Mayfly Genus Baetis (Blue-Winged Olives)

Taxonomic Navigation -?-
» Genus Baetis (Blue-Winged Olives)
Species in BaetisNumber of SpecimensNumber of Pictures
Baetis bicaudatusBWO00
Baetis brunneicolorBlue-Winged Rusty Dun00
Baetis flavistrigaBWO00
Baetis intercalarisSmall Eastern Blue-Winged Olive00
Baetis magnusIron Blue Quill00
Baetis tricaudatusBlue-Winged Olive00

17 species aren't included.
Common Names
MatchCommon Name
****Blue-Winged Olives
***Little Iron Blue Quills
***BWOs
**Rusty Spinners
**Little Brown Quills
**Little Blue-Winged Olives


Pictures Below ↓

This is page 4 of specimens of Baetis. Visit the main Baetis page for:

  • The behavior and habitat of Baetis.

Pictures of 32 Mayfly Specimens in the Genus Baetis:

Specimen Page:1234
Female Baetis tricaudatus (Blue-Winged Olive) Mayfly DunFemale Baetis tricaudatus (Blue-Winged Olive) Mayfly Dun View 6 PicturesThis one emerged from a nymph of this kind in my studio but got a bit waterlogged before I could pull it out to photograph.
Collected September 12, 2020 from the Yakima River in Washington
Added to Troutnut.com by Troutnut on September 19, 2020
Female Baetis tricaudatus (Blue-Winged Olive) Mayfly SpinnerFemale Baetis tricaudatus (Blue-Winged Olive) Mayfly Spinner View 6 Pictures
Collected July 31, 2020 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on August 16, 2020
Baetis flavistriga (BWO) Mayfly NymphBaetis flavistriga (BWO) Mayfly Nymph View 5 PicturesThis specimen keys to the Baetis flavistriga complex, which could be either flavistriga or Baetis phoebus.
Collected August 3, 2020 from the East Fork Big Lost River in Idaho
Added to Troutnut.com by Troutnut on August 19, 2020
Female Baetis tricaudatus (Blue-Winged Olive) Mayfly SpinnerFemale Baetis tricaudatus (Blue-Winged Olive) Mayfly Spinner View 5 PicturesThis female spinner was deceased when photographed, so the posture is unnatural, but it was a substantial hatch and clearly worth imitating (with wet flies to imitate the sunken ovipositing females) so I went ahead with the photos.

It was collected in association with a male spinner.
Collected September 4, 2020 from Silver Creek in Idaho
Added to Troutnut.com by Troutnut on September 18, 2020
Female Baetis (Blue-Winged Olives) Mayfly DunFemale Baetis (Blue-Winged Olives) Mayfly Dun View 2 Pictures
Collected June 30, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on June 30, 2011
Male Baetis (Blue-Winged Olives) Mayfly SpinnerMale Baetis (Blue-Winged Olives) Mayfly Spinner View 2 PicturesProbably Baetis tricaudatus.
Collected July 13, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 13, 2011
Female Baetis (Blue-Winged Olives) Mayfly SpinnerFemale Baetis (Blue-Winged Olives) Mayfly Spinner View 1 Pictures
Collected July 13, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 13, 2011
Female Baetis (Blue-Winged Olives) Mayfly DunFemale Baetis (Blue-Winged Olives) Mayfly Dun View 1 PicturesProbably Baetis tricaudatus.
Collected July 13, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 13, 2011
Baetis (Blue-Winged Olives) Mayfly AdultBaetis (Blue-Winged Olives) Mayfly Adult View 1 Pictures
Collected March 1, 2005 from the Jocko River in Montana
Added to Troutnut.com by Bnewell on June 28, 2011
Specimen Page:1234
Top 10 Fly Hatches
BaetisBaetidaeEphemerellidaeHexagenia limbataChironomidaeHeptageniidaeEphemerella subvariaEphemerellaIsonychiaHydropsychidae
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Baetisca obesa Mayfly NymphNeophylax Caddisfly AdultCorydalus Hellgrammite LarvaRhyacophila fuscula Caddisfly LarvaBaetis Mayfly Dun
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